=== modified file 'dhis-2/dhis-services/dhis-service-dxf2/src/main/java/org/hisp/dhis/dxf2/schema/DefaultSchemaValidator.java'
--- dhis-2/dhis-services/dhis-service-dxf2/src/main/java/org/hisp/dhis/dxf2/schema/DefaultSchemaValidator.java	2014-12-22 13:52:51 +0000
+++ dhis-2/dhis-services/dhis-service-dxf2/src/main/java/org/hisp/dhis/dxf2/schema/DefaultSchemaValidator.java	2014-12-22 14:39:58 +0000
@@ -67,7 +67,7 @@
 
             if ( value == null )
             {
-                if ( !property.isRequired() )
+                if ( property.isRequired() )
                 {
                     validationViolations.add( new ValidationViolation( "Property '" + property.getName() + "' can not be null." ) );
                 }